I have a C100 plus radar detector interface installed in my M3 -- I love it, and the main feature I use is the V1 suppression.
I just got another car this week and instead of moving everything back & forth, I wanted to buy another C100/RDI and just move the V1 between cars.
I was sad to see the C100 is discontinued. The C50 looks awesome, but without the V1 interface, I miss my favorite feature.
Any word on other alternatives from Cheetah or any other maker?